WP PDF Stamper

WordPress plugin to stamp and securely sell your PDF files

Stamping PDF File from WP eStore’s Squeeze Form Submission

If you are offering a free PDF file download via WP eStore’s squeeze form feature, then you can use the stamper plugin to stamp that PDF file.

Edit the product in question then enable PDF stamping for it. Then use the following standard squeeze form shortcode.

[wp_eStore_free_download_squeeze_form id=1]

1 is the product ID in this example.

When visitors submit their name and email address, it will stamp that value then send the stamped copy of the PDF file to them.

PDF Stamper – Creating a Download Now Button for eMember Members

If you offer PDF files to your eMember members then this feature may be helpful for you.

The PDF Stamper plugin lets you create a download now button for your eMember members. A logged in eMember user can use that button  to download the PDF file. The plugin will stamp the file with the eMember user’s details (name and email address) at the time of download.

Use the following shortcode to place a PDF download now button for eMember members:

[stamper_download_button_for_emember file_url="example.com/url-to-your-file.pdf" button_text="Download Now"]

Using a Custom Button Image with the Download Now Button

You can use a custom button image for the download now button instead of the text. Use the “button_image” parameter in the shortcode to use your custom button image for the button. Below is an example:

[stamper_download_button_for_emember file_url="example.com/url-to-your-file.pdf" button_image="example.com/custom-image-url"]

Opening the PDF Download in a New Window

Use the “new_window” parameter in the shortcode to open the download in a new window. Example shortcode usage below:

[stamper_download_button_for_emember file_url="example.com/url-to-your-file.pdf" button_text="Download Now" new_window="1"]

What Variables Can be Stamped?

This shortcode can only stamp the following variables.

  • {customer_name} – This will be replaced with the name of the member
  • {first_name} – This will be replaced with the first name of the member
  • {last_name} – This will be replaced with the last name of the member
  • {customer_email} – This will be replaced with the email address of the member
  • {date} – Stamping date
  • {customer_phone} – Member’s phone number (only available if you are using the phone number field in eMember)
  • {customer_address} – Member’s address (only available if you are using the address fields in eMember)

PDF Stamper – Creating a Download Now Button for WP Users

If you offer PDF files to your WP Users then this feature may be helpful for you.

The PDF Stamper plugin lets you create a download now button for your WP Users. A logged in WP User can use that button  to download the PDF file. The plugin will stamp the file with the WP User’s details (name and email address) at the time of download.

It will also keep the source PDF file’s URL hidden.

Use the following shortcode to place a PDF download now button for WP Users.

[stamper_download_button_for_wp_user file_url="example.com/url-to-your-file.pdf" button_text="Download Now"]

Using a Custom Button Image with the Download Now Button

You can use a custom button image for the download now button instead of the text. Use the “button_image” parameter in the shortcode to use your custom button image for the button. Below is an example:

[stamper_download_button_for_wp_user file_url="example.com/url-to-your-file.pdf" button_image="example.com/custom-image-url"]

Opening the PDF Download in a New Window

Use the “new_window” parameter in the shortcode to open the download in a new window. Example shortcode usage below:

[stamper_download_button_for_wp_user file_url="example.com/url-to-your-file.pdf" button_text="Download Now" new_window="1"]

What Variables Can be Stamped?

This shortcode can only stamp the following variables.

  • {customer_name} – This will be replaced with the name of the customer making the purchase
  • {first_name} – This will be replaced with the first name of the customer
  • {last_name} – This will be replaced with the last name of the customer
  • {customer_email} – This will be replaced with the email address of the customer making the purchase
  • {date} – Stamping date

User’s address and phone number are not standard fields of WP User record. This shortcode can only stamp values that will be available on all standard WordPress installs.

Adding Extra Protection to Your Source PDF Files

You can do the following things to easily add extra protection to your PDF file URLs that you are selling.

1) Make the folder name hard to guess

For example, you could store your original PDF files in teh following directory of your site which will make it really hard for anyone to guess the location:

http://www.your-domain.com/my-pdf-files/IYqmiy76Hqa/

2) Use an Empty intex.html File

You can also add an empty/blank index.html file in the folder that has your PDF files. This will make it so no one can browse and see the content of that folder.

Download a blank index.html (right click and choose save as)

3) Use Htaccess File

Lets say you are keeping your source/original PDF files in the following folder/directory of your site:

..../wp-content/uploads/my-pdf-files/

Simply add a .htaccess file to the “my-pdf-files” folder with the following content:

deny from all

This will prevent anyone from being able to access the PDF files from that folder.

The FileZilla FTP client tutorial will be very helpful for you (if you don’t know how to use FileZilla already).

WooCommerce and PDF Stamper Integration

The WP PDF Stamper plugin can be integrated with the WooCommerce plugin so your customers get a stamped copy of the PDF file when it is sold via the WooCommerce plugin.

How the PDF Stamping Process Works with WooCommerce

The following points show the usual flow of events that you can expect from the integration:

  1. A customer want to purchase your WooCommerce product (A PDF file), so he pays for the product.
  2. After the payment, the customer gets a download link to download the PDF file(s).
  3. When the customer click on the download link, the PDF stamper will stamp the file and serve the stamped copy of the PDF file to the customer.

Your customers will always see/receive the stamped copy of the PDF file when they go to download a PDF file that they purchased.

How to Integrate Stamper with WooCommerce

Step 1) Install the PDF stamper plugin

Step 2) Go to the following settings area of the PDF Stamper plugin:

PDF Stamper settings -> Integration Settings -> WooCommerce Integration

Step 3) Check the “Enable WooCommerce Integration” field.

woocommerce integration

Step 4) Save the settings.

PDF Stamper Miscellaneous Usage

The WP PDF Stamper can be used in many ways; the main usage of the PDF Stamper is to help secure your PDF eBooks from being shared on file sharing sites. Here are some other ways you can use the WP PDF Stamper:

  • Brand your eBook
  • Brand your company information on PLR (Private Label Rights) eBooks
  • Personalize the eBook
  • Trademark or Copyright your eBooks in one easy step
  • Add Author information
  • Add contact information to your eBooks
  • Special instructions

If you have any creative ways to use the PDF Stamper or suggestions please feel free to leave a comment below.

Minimum Requirements for the WP PDF Stamper Plugin

The WP PDF Stamper plugin requires the following installed on your server

  • Recent Version of WordPress (Version 6.0 or higher)
  • Recent Version of PHP (Preferably PHP 7 or higher)
  • CURL Library (this should be installed by default on most servers)

Requirement for the PDF File to be Stamped

  1. The PDF creator you use must produce a valid PDF file according to the specifications specified by Adobe. (PDF files created by any adobe product, open office, PDF995 etc. are good examples)
  2. The PDF stamper makes it to where you cannot modify the stamped copy of the PDF file (this is for extra security). Any option in the original PDF file that allows the user to modify the file, will not be available in the stamped copy of the PDF file.
  3. The PDF stamper needs the PDF file to be hosted on the same site/domain where the PDF stamper plugin is installed. You can’t host the PDF file to be stamped on another server (example: Amazon S3).

Stamping a Large PDF File

PDF stamper plugin imposes no limit on the PDF file size. You can stamp large PDF files as long as your server can handle it (we have customers who are using this plugin to stamp large PDF files). However, some common knowledge needs to be applied here. For example, if you have a cheap shared hosting account with limited resources but you are trying to stamp a very large file then chances are that your server won’t be able to handle the request and the stamping will fail.

WP PDF Stamper License Agreement

WP PDF Stamper (Single Site License)

End User License Agreement

Copyright, Tips and Tricks HQ (http://www.tipsandtricks-hq.com/)

All rights reserved.

By using the software, you agree to be bound by the terms of this license. If you have any questions about the terms below, please contact tipsandtricks-hq.com for clarification.

1.) You must have paid tipsandtricks-hq.com to use the software.

2.) The copyright holder retains all intellectual property rights to the software.

3.) You are granted the right to install the software on a single website.

4.) You may not use code snippets from the software elsewhere (extraction and individual usage of code is not allowed).

5.) You may not re-distribute (either freely, or for any kind of compensation) the software, in whole or in part, to any 3rd party.

6.) You expressly acknowledge and agree that use of the software is at your sole risk. No warrantly is provided, either expressed or implied.

Note: We do not have a multi-site license for this product. If you want to buy multiple licenses then we can offer you a discount.

WP PDF Stamper Demo (With Plain PayPal button)

You can test out how the PDF stamper works from this page by making a test purchase using the simple PayPal “BUY” button below. Please only test it if you are serious about this product (we will not give a refund for this $1 purchase).

The Whole Process includes:

  • Making a test transaction by clicking on the “Buy Now” button (The test product is $1)
  • After you make the payment the plugin will stamp a copy of the PDF eBook with your details (e.g. Name, Email, Address)
  • Finally, the plugin will send the stamped PDF file to you via email.